Posts: 117
Joined: 6/20/2006 From: Hastings,
MN, USA Status: offline
quote:
ORIGINAL: zzw26n
Great job Doug .......... looking real good!
Thanks Ward,
It's been a good choice to build, there are so many things I will be looking for when I get a chance to build a 40%er.
After thinking through the lay out for a single canopy and forward hatch assembly and matching it with the turtle deck I am using Albert's advice. I am scraping the cockpit foor F4A with exception of how it flushes out the clam shell sides. I will build a frame for the canopy that will include the forward hatch like the newer design on a 40%. I added a piece of 1/4 stringer to the bottom of F3A and the cut out from F4A between F2A and F5A to strengthen the seam and also to give me a better surface to attach the clam shell side. I added some lightening holes to F3A and F4A.
My next move is to sheet the turtle deck so I can finish the truss back to the tail and have the proper width. After that I will add the remaing 1/4" stringers and build the clam shell sides. That way the canopy frame assembly can be build to match exactly for length and width to the fuse sides.
Posts: 117
Joined: 6/20/2006 From: Hastings,
MN, USA Status: offline
I thought it would be fun to set it up on the gear and check the layout of the front hatch, canopy and rear deck. It was also a little confidence boost to feel like was begining to look like an airplane. I am sheeting only the bottom edges of the hatch and rear deck, and to save some additional weight will hot wire out some of the foam core.
I am kind of at a stand still till the glue dries on the hatch and deck cores. I think I will cut and edge glue the sheeting for the horizontal and verticle stabs. This will be a challenge because half of the stack of sheeting is not edge trued with a BIG bow through the center.
Doug
Thanks Ron for the vote of confidence, I look forward to bringing it to the field.
Posts: 117
Joined: 6/20/2006 From: Hastings,
MN, USA Status: offline
After sheeting the rear deck and forward hatch and then laying everything out on the plans, I was very unhappy with the fit of the forward hatch to the fuse sides. The forward hatch overhangs both sides of the fuse by nearly a 1/4" equally on both sides, which when you account tor the 3/32 clam shell sideing = aprox 3/32ish too much overhang. I have checked the plans to ensure I had not built or cut down anything by accident, all looks good. With out a hollowed out front hatch to I can not pull the sides in to match. My solution was to cut two 10mm wide strips of 3/32" balsa and laminate it to the sides of F4A and F3A and the 3/8" stringer I added earlier, between F2A and F5A. With a long sanding bar I will then take that 3/32" strip down to the exact width I need for the front hatch and taper it to match at F5A. Just call me Mr Balsa Dust.
Posts: 117
Joined: 6/20/2006 From: Hastings,
MN, USA Status: offline
quote:
ORIGINAL: 80stars
I thought it would be fun to set it up on the gear and check the layout of the front hatch, canopy and rear deck. It was also a little confidence boost to feel like was begining to look like an airplane. I am sheeting only the bottom edges of the hatch and rear deck, and to save some additional weight will hot wire out some of the foam core.
I am kind of at a stand still till the glue dries on the hatch and deck cores. I think I will cut and edge glue the sheeting for the horizontal and verticle stabs. This will be a challenge because half of the stack of sheeting is not edge trued with a BIG bow through the center.
Doug
Thanks Ron for the vote of confidence, I look forward to bringing it to the field.
Posts: 117
Joined: 6/20/2006 From: Hastings,
MN, USA Status: offline
I attached the rear deck last night and finished the cross trussing today. I am begining to lay out the wings and will begin the sheeting process next. Any recommendations for a ratio when lengthing and tapering ailerons, or do you just do what looks good? The plans call for a 33" non-tapered 3.25" aileron on a 42" wing panel. I layed out a length of 38.5 and a taper from 3.25 at the tip to 4.75 at the root, looks good .
Posts: 117
Joined: 6/20/2006 From: Hastings,
MN, USA Status: offline
Ahhh...
The wing task at hand. Nothing like the smell of polystyrene foam cores in the morning. After laying out the ailerons, I pluged the tube, fit the stress sockets, 1/4" drilled the tube slot (for glue), and glued in the phenolic tubes. While thinking through the layout for my aileron servos I made my wing sheets from the 1/16x3.25x42.5 balsa sheeting. I am going to blame the irregular (bowed) edging of the balsa to age and storage of the kit. The edges may have been trued 14 years ago, but not today. I did my best to pull the edges together, but I still had more glue seep through the joints than I would have liked. Most of it sanded flat on the work top with the palm sander using 220 and 400 grit, I am hopeful that after I get the sheets on the foam cores I will be able to work any remaing glue into a blend.
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RE: 30% 300S mod to mid wing? - 
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